jermstyle

I had my SVO 30# Injectors flowed today so I can dial in my IFR table.

The final results are attached to the thread. The flow numbers are in ML so they must be divided by 10.5 to find the Lbs/Hr rating.

Ultimately it looks like the injectors are actually rated at 43.5 PSI mine flow 31 Lbs/Hr at 43.5 PSI.

It's still a good idea to have YOUR injectors flowed so you know where to place them. But this should be a good guideline for the red top SVO 30# injector.


For those that need help with calculating the IFR - Here is how it works.

My least flowing injector runs 330ml/hr or 31.4lbs/Hr @ 43.5 PSI.

Using the injector IFR spreadsheet here (http://www.marcintology.com/tuning/injectors.xls)

You would enter the following:

Injector Rated Fuel Pressure: 43.5
Your Fuel Rail Pressure: 58
Injector Rated Flow Rate: 31.4

And the result will be:

4.364768
4.391971
4.419006
4.445876
4.472586
4.499136
4.525531
4.551773
4.577865
4.603808
4.629607
4.655262
4.680776
4.706153
4.731393
4.756499
4.781474

G/Sec


These are my results, yours may vary.

405HP_Z06

iTrader: (11)

Thanks!

sn8ke eatr

cool im gonna be using svo 30's as well

mowton

Thank you for the info, interesting as they seem to flow about 4% more than the specification. Were these new injectors or old? if old, how long were they used?

An interesting test would have been to verify flow at our rated fuel pressure of 58 to see if the response is linear and/or matches the calculator results.

Thanks again and good luck.

Ed

PS I too am looking for some additional detail on the injector and how it relates to the other Injector parameter tables we have access to. especially min pulse setting, battery offset, low/hi slope performance etc.

jermstyle

Hope the info can help someone. The injectors had about 500 miles on them and were maybe two years old. (The car doesn't get out much).

69_YENKO

iTrader: (16)

thanks for the info, im fixing to switch to 30# SVO red tops next week.

BrokenWs6

Can someone help me understand why I would need flow matched injectors? I just picked up a set of used (2k miles) red tops for cheap so I couldn't pass em up! Also, if they need to be flowed, where can I send them?

405HP_Z06

iTrader: (11)

Flow matched injectors deliver the same volume of fuel at the same pulse width to each cylinder. The problem with unmatched sets is they can flow a different volume to each cylinder which could be a huge problem if your tune isn't correct. Since no one typically runs 8 wideband oxygen sensors, it's impossible to tell if one cylinder is running leaner than the other which still may be the case because of airflow dynamics. Unmatched injectors could exacerbate the problem.

Running overly rich in a cylinder could have detrimental effects on engine life caused by fuel washed cylinders. This causes elevated wear on pistons, rings, and cylinders which exposes engine oil to aromatics. These aromatics quickly break down engine oil that causes wear in the rest of the engine. Ask me how I know?

You can send them to Fuel Injector Connection for reconditioning, which is highly recommended if the used injectors have sat for a length of time. You can PM Rich at FICINJECTORS for information.